Home / 135,354.32-186,808.92-77,982.56

Finding the Fourth Proportional to 135,354.32, 186,808.92 and 77,982.56

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Solution

The fourth proportional to 135,354.32, 186,808.92 and 77,982.56 is: 107,627.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,354.32 : 186,808.92 = 77,982.56 : x
  2. Step 2: Convert to fraction form
    135,354.32/186,808.92 = 77,982.56/x
  3. Step 3: Cross multiply
    135,354.32x = 186,808.92 × 77,982.56
  4. Step 4: Simplify right side
    135,354.32x = 14,567,837,812.44
  5. Step 5: Solve for x
    x = 14,567,837,812.44/135,354.32
  6. Step 6: Final answer
    x = 107,627.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.